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Annotation of pgp/src/random.h, revision 1.1.1.2

1.1       root        1: /*     random.h - Header include file for random.c
                      2:        Last revised 15 Dec 90
                      3:        (c) 1989 Philip Zimmermann.  All rights reserved.
                      4: */
                      5: 
                      6: 
1.1.1.2 ! root        7: #include "usuals.h"  /* typedefs for byte, word16, boolean, etc. */
1.1       root        8: 
                      9: int pseudorand(void);  /* 16-bit LCG pseudorandom generator */
                     10: 
1.1.1.2 ! root       11: /*     Don't define PSEUDORANDOM unless you want only pseudorandom numbers.
        !            12:        If you do want PSEDORANDOM defined, it's better to define it right 
        !            13:        here in this include file because then you can be sure that all the 
        !            14:        files that include random.h will be properly affected. */
        !            15: /* #define PSEUDORANDOM */
1.1       root       16: 
                     17: #ifdef PSEUDORANDOM            /* use pseudorandom numbers */
                     18: #define randombyte()  ((byte) pseudorand())    /* pseudorandom generator */
                     19: #define randaccum(bitcount)            /* null function */
                     20: #define randload(bitcount)     /* null function */
                     21: #define randflush()            /* null function */
                     22: #define capturecounter()       /* null function */
                     23: #define keypress() kbhit()     /* TRUE iff keyboard input ready */
                     24: #define getkey() getch()       /* returns data from keyboard (no echo). */
                     25: #endif /* ifdef PSEUDORANDOM */
                     26: 
                     27: #ifndef PSEUDORANDOM           /* use truly random numbers */
                     28: 
                     29: extern int randcount;  /* number of random bytes accumulated in pool */
                     30: 
                     31: void capturecounter(void); /* capture a fast counter into the random pool. */
                     32: /* Should be called when the user clicks the mouse, or from getkey(). */
                     33: 
                     34: short randombyte(void);        /* returns truly random byte from pool */
                     35: 
                     36: int getstring(char *strbuf,int maxlen,boolean echo);
                     37: 
                     38: void randaccum(short bitcount);        /* get this many raw random bits ready */
                     39: 
                     40: short randload(short bitcount);
                     41: /* Get fresh load of raw random bits into recyclepool for key generation */
                     42: 
                     43: void randflush(void);  /* flush recycled random bytes */
                     44: 
                     45: boolean keypress(void);        /* TRUE iff keyboard input ready */
1.1.1.2 ! root       46: #ifndef AMIGA
1.1       root       47: short getkey(void);            /* returns data from keyboard (no echo). */
1.1.1.2 ! root       48: #endif /* !AMIGA */
1.1       root       49: 
                     50: #endif                 /* ifndef PSEUDORANDOM */
                     51: 

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